Swimming has been a sport at every modern Summer Olympics. It has been open to women since 1912. At the Olympics, swimming has the second-highest number of medal-contested events.
The women's 100 metre freestyle event at the 1952 Olympic Games took place between 26 and 28 July at the Swimming Stadium. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The women's 100 metre butterfly event at the 1956 Olympic Games took place on 3 and 5 December. This swimming event used the butterfly stroke. Because an Olympic-size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The women's 100 metre butterfly event at the 1960 Olympic Games took place on August 29 and August 30. This swimming event used the butterfly stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The women's 4 × 100 metre medley relay event at the 1960 Olympic Games took place on August 30 (qualification) and September 2 (final). This swimming event uses medley swimming as a relay. Because an Olympic size swimming pool is 50 metres long, each of the four swimmers completed two lengths of the pool, each using a different stroke. The first on each team used the backstroke, the second used the breaststroke, the third used the butterfly stroke, and the final swimmer used freestyle.
The women's 100 metre freestyle event at the 1964 Olympic Games took place between October 12 and 13. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic-size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The women's 100 metre butterfly event at the 1964 Olympic Games took place on October 14 and October 16. This swimming event used the butterfly stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The men's 100 metre butterfly event at the 1968 Olympic Games took place between 20 and 21 October. This swimming event used the butterfly stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The men's 4×100 metre medley relay event at the 1968 Olympic Games took place on October 26. This swimming event uses medley swimming as a relay. Because an Olympic size swimming pool is 50 metres long, each of the four swimmers completed two lengths of the pool, each using a different stroke. The first on each team used the backstroke, the second used the breaststroke, the third used the butterfly stroke, and the final swimmer used freestyle.
The women's 100 metre freestyle event at the 1968 Olympic Games took place between 18 and 19 October. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic-size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The inaugural women's 200 metre freestyle event at the 1968 Olympic Games took place between 21 and 22 October. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of four lengths of the pool.
The women's 400 metre freestyle event at the 1968 Olympic Games took place between 19 and 20 October. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic-size swimming pool is 50 metres long, this race consisted of eight lengths of the pool.
The women's 800 metre freestyle event at the 1968 Olympic Games took place between 22 and 24 October. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of sixteen lengths of the pool.
The women's 100 metre breaststroke event at the 1968 Summer Olympics took place between 18 and 19 October in the Alberca Olímpica Francisco Márquez. This swimming event used the breaststroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool. This was the first appearance for this event in the Olympics for the women swimmers.
The women's 200 metre butterfly event at the 1968 Olympic Games took place 24 October. This swimming event used the butterfly stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of four lengths of the pool. This was the first time for this event for the women swimmers.
The women's 200 metre individual medley event at the 1968 Summer Olympics took place 20 October. This swimming event used medley swimming. Because an Olympic size swimming pool is 50 metres long, this race consisted of four lengths of the pool. The first length was swum using the butterfly stroke, the second with the backstroke, the third length in breaststroke, and the fourth freestyle. Unlike other events using freestyle, swimmers could not use butterfly, backstroke, or breaststroke for the freestyle leg; most swimmers use the front crawl in freestyle events anyway.
The women's 400 metre individual medley event at the 1968 Summer Olympics took place on 24–25 October. This swimming event used medley swimming. Because an Olympic size swimming pool is 50 metres long, this race consisted of eight lengths of the pool. The first two lengths were swum using the butterfly stroke, the second pair with the backstroke, the third pair of lengths in breaststroke, and the final two were freestyle. Unlike other events using freestyle, swimmers could not use butterfly, backstroke, or breaststroke for the freestyle leg; most swimmers use the front crawl in freestyle events.
The women's 4×100 metre medley relay event at the 1968 Olympic Games took place on 17 October. This swimming event uses medley swimming as a relay. Because an Olympic size swimming pool is 50 metres long, each of the four swimmers completed two lengths of the pool, each using a different stroke. The first on each team used the backstroke, the second used the breaststroke, the third used the butterfly stroke, and the final swimmer used freestyle.
The women's 100 metre freestyle event at the 1972 Olympic Games took place between August 28 and 29. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
The women's 100 metre butterfly event at the 1972 Olympic Games took place between August 31 and September 1. This swimming event used the butterfly stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of two lengths of the pool.
